Sharpening device for hair clippers



1929. H. MQBENNETT ET AL SHARPENING DEVICE FOR HAIR CLIPPERS Filed March 10, 1928 BY mvmbns ATTORNEY Patented Dec. 31, 1929 UNITED STATES PATENT OFFICE HORACE M. BENNETT AND SIDNEY J. BOMAN, F MARGARET, TEXAS SHARPENING DEVICE FOR HATE GLIPPERS Application filed March 10, 1928. Serial No. 260,783.

This invention relates to sharpening means for hair clippers, the general object of the invention being to provide a pair of plates, each plate being grooved and having a pair of sharpening stones inserted in the grooves, one plate being formed so that it can be sub stituted for the upper blade of the clippers and used to sharpen the lower blade thereof and the second plate being formed so that 1 it can be substituted for the lower blade and used to sharpen the upper blade of the clippers.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims. In describing our invention in detail, reference willbe had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side View of a pair of clippers, showing the upper blade thereof being sharpened.

Figure 2 is a similar view showing the bottom blade being sharpened.

Figure 3 is a plan view of the stone carry-- ing plate for sharpening the top blade. Figure 4c is an edge view of said plate. Figure 5 is a plan view of the stone carrying plate for sharpening the lower blade. Figure 6 is an edge view of this plate. As shown in Figures 1, 3 and 4, the plate 1 for sharpening the upper cutter A of the clippers is formed with two transversely extending grooves 2 of dovetail shape. each groove receiving a stone 3 of dovetail shape, the stone projecting above the upper surface of the plate. This plate is of the same shape as the lower blade of the clippers and it is formed with the central recess 4 and the l countersunk holes 5, these holes being adapted to receive the screws 6 for attaching the plate to the head of the clippers. The plate is also provided with a central transverse groove 7 and the lugs 8 which have their stems engaging holes in the bottom of the groove 7. Inusing this plate, the bottom cutter of the clippers is removed and this plate substituted so that the stones 3 engage the teeth carrying part of the upper blade and the rear part of said blade. When the clippers are operated,the'upper blade A is recipro-x cated in the usual manner so that the stones will grind the front and rear portions of the upper blade. The stones are removable so that they can be replaced by new ones when worn. i

The plate 9 for sharpening the bottom blade is so formed that it can be substituted for the upper blade A. This plate is formed with the rear transverse groove 10 for receiving the stone 11 and on opening 12 is formed in the center of one side of the plate and the edges at this side of the plate are cut away to form recesses for the short stones 13. The stones are detachably held in the re cesses and groove by the side strips 14; and the clips 15; In using this plate 9, the upper cutter A is removed and said plate substituted forit so that thestones 11 and 13 carried by said plate will engage the lower cutter B of the clippers and when the clippers are 0perated, the plate 9 will be reciprocated the same as the upper blade and thus the lower blade B will be sharpenedby the stones carried by said plate 9. The same thumb nut and spring that holds the top blade A in position holds the plate 9 with its stones while the bottom blade Bis being sharpened. This plate 9 is formed with the openings 16 or it may be formed with lugs according to the type of clippers on which the sharpening means are used.

These sharpening means can be used on various types of clippers by making minor changes to such means. The head of the clippers should be held in water while the sharpening action is taking place to prevent overheating. As the sharpening means are practiaclly the same weight asthe clipper blades, the use of the invention will not get the clippers out of balance while in operation. It will, of course, beunderstood that the blades of the clippers have the same movement while being sharpened as when cutting hair.

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It is thought from the foregoing description that the advantages and novel features of our invention'will be readily apparent.

It is to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What we claim is 1. Sharpening means for hair clippers comprising a plate adapted to be substituted for one blade of the clippers for sharpening the other blade, said plate being formed for engagement by the conventional blade holding means for fastening the plate in position, a pair of spaced relatively narrow abrasive members carried by the plate for.per forming on the blade the sharpening operation, and meansv for holding said abrasive members in position but permitting them to be quickly applied or removed, substantially as set forth.

2. Sharpening means for hair clippers comprising a plate adapted to be used in lieu of a clipper blade for engagement with the other blade for sharpening the same, said.

late beingadapted to be secured in position the means which. engage and hold the blade in position, an abrasive-member .car-. ried by the plate for performing'the sharpening operation, and means for securing said abrasive member to the plate in a manner to permit its quick application or removal, substantially as set forth.

3. A plate adapted to besubstituted for. a

blade of a hair clipper for sharpeningthe.

other blade, said plate being-providedwith an elongated recesstherein, an abrasive member located in said recess, and means for securing the abrasive member in the recess in.

a manner .to permit its quick insertion or removal, substantially as set forth.

4. Sharpening means. for. hair clippers comprising a bottomplate adapted to be sub 7 stituted for the lower plate of the clippers, said bottom plate being adapted tobe secured.

in position by the means which engage and hold the lower blade in position, adapted to be substituted for the upper plate e clippers,.said top plate being adapted to be secured in position by the means which engage and hold the top plate in position, said ottom and top plates being provided with abrasive members for sharpening the upper and lower blades, and means for securing saidabrasive members totheir respective plates in a manner to permit quick application or removal of the same, substantially as set forth.

In testimony whereof we aflix our. signatures,

HORACE M. BENNETT. SIDNEY J. BOMAN.

a top plate 

